Valve or gate.



F. P. SNOW.

VALVE 0R GATE.

APPLIUATION FILED JULYs, 1910.

989,201. Patented Apr.11, 1911.

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UNTTED STATES PATENT OFFICE.

FRANK P. SNOW, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO KELLAR-THOMASONMANUFACTURING COMPANY, F COVINA, CALIFORNIA, A CORPORATION OF CALI-FORNIA.

VALVE OR GATE.

Specification of Letters Patent.

Patented Apr. 11, 1911.

To all whom it may concern:

Be it known that I, FRANK P. SNow, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Valves orGates, of

Awhich the following is a specification.

This invention relates to valves or gates, and the object of theinvention is to produce a device of this class having a simpleconstruction for moving a disk or gate into position before the valveopening and for giving the disk a lateral movement which will bring itsecurely upon its seat. The arrangement is such that the same movementwhich advances the disk across the opening suffices to move the disklaterally on to the seat when it has come into a central position withrespect to the valve opening.

The invention consists in the construction and combination of parts tobe more fully described hereinafter and particularly set forth in theclaims. i IIn the annexed drawing which fully illustrates myinvention,Figure 1 is a front elcvation of the valve or gate constructed accordingtomy invention, certain parts being broken away. Fig. 2`is'alongitudinal vertical section of this valve or gate. This view, like.Figfl shows the gate in a partly ope-n position. Fig. 3 isa horizontalcross section taken through the valve or gatel andfurther illustrating`details of its construction. Fig. 4 is'avertical section taken near oneside ofthe device and particularly illustrating details of the means forarresting the transverse movement of the gate or disk so as to move'thesame laterally on to the seat.

AReferring more particularly to the parts 1 represents a gate framewhich comprises two oppositely disposed vertical guide bars 2 the lowerportions of which are connected by a valve plate 3, said plate having acircular valve opening 4. The edge of this valve opening 4 presen-ts anoutwardly projecting bead or raised seat 5. The guide bars 2 are formedinto channels presenting flanges 6 and 7 which project inwardly towardthe centrallongitudinal axis of the device. On the flange 6 there isguided a cross head 8 said cross head presenting ya pair of flat bars 9arranged parallel with each other as shown. At its middle point thecross head is formed with a slide 10 which is disposed in an inclinedposition as indicated in Fig. 2. This-slide approaches the valve seat inau upward direction. As indicated in Fig. 3 the slide presents under cutguide grooves ll at its side. This slide l0 is adapted to receive aslide block 12 which extends outwardly from a valve disk or gate 13being formed integral with the gate as shown. This block lits nicely inthe under cut groove 11 so as to form a guide for the disk or gate, aswill be readily understood. If the block 12 slides upwardly in the slideit will approach the seat, and if it moves downwardly it will recedefrom the seat.

I provide a screw 1li for raising and lowering the cross head 8, saidscrew having threaded engagement with a fixed nut or bearing 15 attachedto a cross bar 1G which forms the upper portion of the f 'ame 1. On thisnut or block 15 a sleeve 17 is seated which envelops a portion of thescrew above the frame. The upper end of the 'screw is provided with ahand wheel 18 for rotating the screw, and the lower end of the screwforms a swivel connection 19 with the cross head. Near its upper edgethe gate or valve disk 13 is provided with a bracket 2O which is rigidlysecured thereto andthis bracket' is formed with an elongated slot 21through which the stein or screw 14 passes. This bracket assists insupporting the gate or disk 18 in an upright position and relieves theslide 10 from some of the strain.

Referring especially to Figs. 2 and 4, the plate 3 is attached to theflanges 7 and, 'at a point substantially on the 'same level as thecenter of the disk, the plate 3 presents lugs or stops 22. Just abovethese stops angulainotches 23 are formed which pass through t-he flange7 as indicated. At its side the disk o1' gate 13 is provided with dogblocks or dogs 24 which are formed integrally therewith as indicated.`These dogs are in the form of substantially square blocks which areadapted to be received in the notches 23 as will be readily understood.These dogs present flat inner faces which slide on the inner sides ofthe flanges 7 when the gate is being opened or closed. They are arrangedso that the stops 22 will project into their path as the disk descendsinto position to close the opening 4. The inner face of the gate or disk13 is provided with an annular packing ring 25 which is adapted to comeupon the seat 5 so as to close the opening 4: water tight which will bereadily understood.

In order to assist in supporting the disk in an upright position, Iprovide the lower part of the cross head 8 with inwardly projecting lugs26 which are adapted to engage the rear sides of radiating ribs 27formed on the back of the disk. It will be evident that these lugsassist in supporting t-he disk in an upright position and they formstops which limit the downward movement of the block 12 in the slide 10.

The mode of operation of the gate will now be described.

Vhen the screw 14` is rotated in the proper direction by means 'of thehand wheel 18 the cross head 8 will descend and carry with it the diskor gate 13. At this time the block 12 will lie near the bottom of theslide 10 and the disk will be disposed in a position withdrawingsomewhat from its seat. When the disk 13 has come into a centralposition over the opening A, the lugs 24 will engage the stops 22 andthis will arrest a further transverse movement of the disk or gate. Acontinued downward movement of the cross head will then operate throughthe slide 10 to force the gate inwardly toward its seat. In this lateralmovement which brings the gate upon its seat, the dogs 24 are supportedon the upper faces at the stops 22 and they slide back into the notches23 until the packing ring 25 seats itself firmly on the seat 5. lNhenthe gate is opened an upward movement of the cross head occurs beforethe upward movement of the disk begins. In this connection it should benoted that the upper edges of the notches 23 engage the upper faces ofthe dogs 24e and prevent the disk from rising intermediately. On accountof the slide 10 the upward movement of the cross head produces a lateralwithdrawal of the disk from the seat and this lateral withdrawalmovement continues until the dogs 24 clear the notches 23 and clearthemselves also from the stops 22. The

Y disk will then drop back into the position 1. A valve plate having anopening, a member guided transversely with respect to said opening andhaving an inclined slide, a disk adapted to close said opening andguided in said slide, a means for arresting thetransverse movement ofsaid disk to enable said slide to force said disk laterally toward saidopening.

2. A valve plate having an opening, a cross head, means for guiding saidcross head transversely with respect to said opening, said cross headhaving a slide inclined with respect to said opening, a disk having amember mounted in said slide, said slide being arranged to approach theplane of said opening in an upper direction, means for arresting thetransverse movement of said disk, said slide affording means thereafterto force said disk laterally toward said opening.

3. A valve plate having an opening, a seat formed thereabout, a crosshead, means for guiding said cross head transversely with respect. tosaid opening, said cross head having a slide inclining toward said seatin an upperdirection, a disk having a block mounted in said slide andhaving lugs on the inner face thereof and at the sides of said disk andfixed stops projecting into the pat-h of said lugs and adapted to arrestthe transverse movement of said disk, said slide affording means forforcing said disk laterally onto said seat.

4. A valve plate having an opening with a seat formed thereabout, across head, means for guiding said cross head transversely wit-h respectto said opening, said cross head having an inclined slide, a diskAmounted in said inclined slide and having dogs at the sides thereof,members guiding said dogs and having notches therein adapted to receivesaid dogs when said disk comes upon said seat, and means projecting intothe path of said dogs to arrest the transverse movement of said disk,whereby the continued movement of said cross head advances said disklaterally on to said seat.

In witness that I claim the foregoing I have hereunto subscribed my namethis 27th day of June, 1910.

FRANK P. SNOW. Vitnesses F. D. AMMEN, EDMUND A. STRAUSE.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

